Breaking the Diffraction Barrier: Optical Microscopy on a Nanometric Scale
Tóm tắt
In near-field scanning optical microscopy, a light source or detector with dimensions less than the wavelength (λ) is placed in close proximity (<λ/50) to a sample to generate images with resolution better than the diffraction limit. A near-field probe has been developed that yields a resolution of ∼12 nm (∼λ/43) and signals ∼10 4 - to 10 6 -fold larger than those reported previously. In addition, image contrast is demonstrated to be highly polarization dependent. With these probes, near-field microscopy appears poised to fulfill its promise by combining the power of optical characterization methods with nanometric spatial resolution.
Từ khóa
Tài liệu tham khảo
BETZIG, E, COLLECTION MODE NEAR-FIELD SCANNING OPTICAL MICROSCOPY, APPLIED PHYSICS LETTERS 51: 2088 (1987).
BETZIG, E, NEAR-FIELD SCANNING OPTICAL MICROSCOPY (NSOM) - DEVELOPMENT AND BIOPHYSICAL APPLICATIONS, BIOPHYSICAL JOURNAL 49: 269 (1986).
BETZIG E Near-field Scanning optical microscopy Scanning Microscopy Technology and Applications (1988).
BETZIG E THESIS CORNELL U (1988).
FISCHER, U.C., NEAR-FIELD OPTICAL-SCANNING MICROSCOPY IN REFLECTION, APPLIED PHYSICS LETTERS 52: 249 (1988).
FISCHER, U.C., OPTICAL CHARACTERISTICS OF 0.1-MU-M CIRCULAR APERTURES IN A METAL-FILM AS LIGHT-SOURCES FOR SCANNING ULTRAMICROSCOPY, JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 3: 386 (1985).
Goodman J. W. Introduction to Fourier Optics (1968).
HAROOTUNIAN, A, SUPERRESOLUTION FLUORESCENCE NEAR-FIELD SCANNING OPTICAL MICROSCOPY, APPLIED PHYSICS LETTERS 49: 674 (1986).
LEWIS, A, DEVELOPMENT OF A 500-A SPATIAL-RESOLUTION LIGHT-MICROSCOPE .1. LIGHT IS EFFICIENTLY TRANSMITTED THROUGH GAMMA-16 DIAMETER APERTURES, ULTRAMICROSCOPY 13: 227 (1984).
MASSEY, G.A., MICROSCOPY AND PATTERN GENERATION WITH SCANNED EVANESCENT WAVES, APPLIED OPTICS 23: 658 (1984).
Pohl D. W. Scanning near-field optical microscopy Advances in Optical and Electron Microscopy (1990).
POHL, D.W., OPTICAL STETHOSCOPY - IMAGE RECORDING WITH RESOLUTION LAMBDA/20, APPLIED PHYSICS LETTERS 44: 651 (1984).
SYNGE, E.H., A suggested method for extending microscopic resolution into the ultra-microscopic region., PHILOSOPHICAL MAGAZINE 6: 356 (1928).
Teague E. C. Scanning Microscopy Technology and Applications (1988).
Wilson T. Theory and Practice of Scanning Optical Microscopy (1984).